Detailed usage of the CHMOD command

Function Description:

Change file or directory permissions

U: user, the owner of a file or directory.

G: group, that is, the group to which the file or directory belongs.

O: other. All Users except the file or directory owner or group belong to this range.

A: All, that is, all users, including owners, groups, and other users.

The permission code is listed below:

R: Read Permission, number code: "4 ".

W: Write Permission. The number is "2 ".

X: execute or switch the permission. The number is "1 ".

-: You do not have any permission. The digit code is "0 ".

Instance:

1)

Chmod A + x sort

2)

Chmod 777 sort

The first "7" is u

The second "7" is g

The third "7" is o

Detailed usage of the CHMOD command